package com.xjun.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;
import java.util.Map;

@RestController
public class JDBCController {

    @Autowired
    JdbcTemplate jdbcTemplate;

    //查询数据库的所有信息
    //没有实体类，数据库的东西怎么获取？ Map
    @GetMapping("/userList")
    public List<Map<String,Object>> userList(){
        String sql = "select * from mybatis.user";
        List<Map<String,Object>> list_maps = jdbcTemplate.queryForList(sql);
        return list_maps;
    }
    @GetMapping("/addUser")
    public String addUser(){
        String sql = "insert into mybatis.user(id, name, pwd) VALUES (4,'XJun','666')";
        jdbcTemplate.update(sql);
        return "Update-OK!";
    }

    @GetMapping("/updateUser/{id}")
    public String updateUser(@PathVariable("id") int id){
        String sql = "update mybatis.user set name=?,pwd=? where id="+id;
        //封装
        Object[] objects = new Object[2];
        objects[0] = "XJun05";
        objects[1] = "666666";
        jdbcTemplate.update(sql);
        return "UpdateUser-OK!";
    }

    @GetMapping("/deleteUser/{id}")
    public String deleteUser(@PathVariable("id") int id){
        String sql = "delete from mybatis.user where id=?";

        jdbcTemplate.update(sql);
        return "DeleteUser-OK!";
    }
}
